235656121 has 4 divisors (see below), whose sum is σ = 235761012. Its totient is φ = 235551232.

The previous prime is 235656103. The next prime is 235656143. The reversal of 235656121 is 121656532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 155750400 + 79905721 = 12480^2 + 8939^2 .

It is a cyclic number.

It is not a de Polignac number, because 235656121 - 2¹⁷ = 235525049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235656101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49000 + ... + 53593.

It is an arithmetic number, because the mean of its divisors is an integer number (58940253).

Almost surely, 2^235656121 is an apocalyptic number.

It is an amenable number.

235656121 is a deficient number, since it is larger than the sum of its proper divisors (104891).

235656121 is a wasteful number, since it uses less digits than its factorization.

235656121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104890.

The product of its digits is 10800, while the sum is 31.

The square root of 235656121 is about 15351.0951075159. The cubic root of 235656121 is about 617.6743614222.

The spelling of 235656121 in words is "two hundred thirty-five million, six hundred fifty-six thousand, one hundred twenty-one".